scholarly journals Optimal Power Allocation for Outage Probability Minimization in Fading Channels with Energy Harvesting Constraints

2014 ◽  
Vol 13 (2) ◽  
pp. 1074-1087 ◽  
Author(s):  
Chuan Huang ◽  
Rui Zhang ◽  
Shuguang Cui
Keyword(s):  
Energy Harvesting ◽  
Outage Probability ◽  
Power Allocation ◽  
Fading Channels ◽  
Optimal Power Allocation ◽  
Optimal Power

scholarly journals Design and optimization of multi user OFDM orthogonal chaotic vector shift keying communication system

2021 ◽  
Vol 10 (2) ◽  
pp. 776-784
Author(s):  
Ansam M. Abed ◽  
Fadhil S. Hasan
Keyword(s):  
Power Allocation ◽  
Fading Channels ◽  
Rayleigh Fading ◽  
Optimal Power Allocation ◽  
Allocation Strategy ◽  
Design And Optimization ◽  
Frequency Selective Fading ◽  
Optimal Power ◽  
Shift Keying ◽  
Vector Shift

This paper study and present, power allocation strategy on sub-carriers of multiuser OFDM employed for orthogonal chaotic vector shift keying (MU OFDM-OCVSK) over multipath frequency selective fading channels. firstly, the MU OFDM-OCVSK system is modeled with power allocated on reference and information bearing subcarriers. Then, the computed bit error rate equation of the power allocation MU OFDM-OCVSK system is derived. The optimal power allocation strategy on subcarriers is obtained using convex optimization. Finally, compared with the traditional MU OFDM-DCSK and MU OFDM-OCVSK without power allocation system the proposed system can achieve an excellent BER performance under multipath Rayleigh fading channels. Numerical and Simulation results emphasize the remarkable features of the proposed optimal power allocation strategy.

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